All proprietary information obtained by the commission or the director from producers or vintners, and all lists of vintners in the possession of the commission or the director are confidential and shall not be disclosed except when required in a judicial proceeding. Information on volume shipments, commodity value, and other related information which is required for reports to governmental agencies; financial reports made to the commission or aggregate sales and inventory information; and any other information which is requested from the commission, may be disclosed by the commission. In no event may individual producer or vintner information be disclosed by the commission.